Heater and muffler.



1. L. ANDERSON.-

HEATER AND MUFFLER.

APPLICATION FIL'ED NOV. I3, |914.

Patented Feb. 29, 1916.

' the occupants of the automoblle, so that a JOSEPH L. ANDERSON, 0F TEXAS, MARYLAND.

HEATER AND MUFFLER. Y

V Specification of Letters Patent.

Patented Feb. 29, 1916.

Application led November 13, 1914. Serial No. 871,941.

Taall whom it may concern: X

Be it known that I, JOSEPH L. ANDERsN, a citizen of the United States, residing at Texas, county of Baltimore, and State of Maryland, have invented certain new and useful Improvements in Heaters and Mufflers, of which the following is a specification.

This heaters.

My object is -to provide an improved heater for automob1les, particularly one adapted for use as a foot-warmer, which will utilize the exhaust gases from the motor without creating material back pressure and will alsoV serve as a mufller.

My invention'embodies an improved construction and combination of parts enabling the heat of the exhaust gases to be distributed, by radiation, under the control of invention relates to automobile greater or lesserv degree of heat may be obtained without any of the gases being discharged into the automobile and without unnecessary or unusual noise in muflling the exhaust.

My invention is adaptedfor easy and convenient access to its interior so that inspection or .cleaning may be had without difliculty and the construction is such that vthe heater and muffler may be manufactured at low cost.

The `invention is set forth fully hereinafter and the novel features are recited in the appended claims.

In the accompanying drawings: Figure 1 is a perspective of a portion of an automobile showing the position the heater and mufller occupy; Figy2, a longitudinal section -of the heater and muffler; Fig. 3, a section on line 3 3, Fig. 2; Fig. 4, a section on line 4--4, Fig. 2; and Fig. ,5, a detail showing how the parts may be made of sheet metal.

My combined heater and muiler is adapted to be set in an opening cut in the floor of the car, as shown in Fig. l, the body of the heater depending below the floor and the top plate of the heater and muffler restlng on the floor and covering the opening.

The heater is thus positioned properly for use as a foot-warmer and presents practically no obstruction on the floor of the car. It is also arranged so that it is inthe general usualposition occupied by a muiler. At those seasons of the year when a heater is not needed. the heater may be taken out and stored and the flooring re-inserted where cut out and the usual muffler attached to the exhaust pipe, but the device may remain on the car at all times as I have provided a registeras an improvement, whereby the radiation of heat may be controlled.

The heater may be wholly constructed of cast plates and a cast shell, as shown in Figs. 2, 3 and 4, or it may be made of sheet metal, as indicated in Fig. 5, and I lay claim` to both forms of slidably supporting the partitions, to-wit: by grooves cut or formed in the walls of the shell or grooves defined by lips or flanges on the walls 0f the shell.

Referring first to Figs. 2, 3 and 4, the ends 1 and bottom 2 are cast as a single piece. The ends l have inwardly projecting flanges or a plurality of ears 3. The top plate 4 is secured to the ears 3 in any suitablemanner, either permanently or detachably. The sides 5 overlap the ends 1 and underlie the overhanging side. parts 6 of the top plate 4 and are secured by removable cross bolts 7. The sides and ends are provided with channels 8. Partitions 9 have their end and side edges receivedin the channels 8, the fit being a snug one and yet permitting the partitions 9 to be removed by sliding them in the channels 8 of the ends 1, when either or both of the sides 5 are removed. This construction does away with expensive castings and provides easily cleaned flat surfaces.

. T he partitions 9 may be readily removed on disconnecting the bolts and the entire interior of the heater and mufiler quickly and easily cleaned. The two lowermost partitions have slots or openings 10 at opposite ends, but the uppermost partition 9 is imperforate and constitutes the bottom of a heat chamber 11 to which the gases have no access. The heat in this chamber 11 is derived solely by radiation through the uppermost partition 9. The pipe coupling 12 is adapted to be connected to the exhaust discharge pipe of the motor of the automobile and hence the exhaust gases when at their greatest temperature, enter the chamber 13 and thence pass the full length thereof and dive down through opening 10 into chamber 14, thence passing in an opposite direction throughout the full length of chamber 14 and diving down the other opening 10 into the lowermost chamber 15, whence they y are voided through the exhaust outlet 16, to

the atmosphere. The greatest temperature of the gases entering at l2 is, therefore, had to heat the chamber 11 and, as the exhaust gases pass into the chamber 14, they are subject to the heat of subsequent fresh exhaust gases entering chamber 13, and When finally passing into chamber 15, they receive the heating effect of the gases in the chamber` 14. This return arrangement 0f the chambers is, therefore, availed of for the double purpose of obtaining a high heat radiation into chamber 11 and for muffling the sound of the exhaust.

The plate 4 is provided with openings or slots 17, as preferred, and below this plate is a slidable damper plate 18 which has openings or slots 19 adapted to register with the openings 17 when the plate 18 is moved in a right-hand direction, Fig. 2. The sides 5 are provided with a plurality of lips or a single flange 20 to support the damper plate 18. The plate 18 may be manipulated by any suitable device, such, for instance, as the finger-button 21.

Referring to Fig. 5, I have shown the end la and the bottom 2a as formedv ina single piece from sheet metal. The remaining end 1n will be integral with the bottom 2a. The sides 5a will be of sheet metal and held by bolts as previously explained. The channels 8a on the ends 1a and sides 5a will be formed by lips, flanges or ears 22 secured, as for instance, by riveting.

An asbestos covering 23 is preferably provided on the ends 1, bottom 2 and sides 5 to minimize radiation except through the top of the.heater. The inside faces of the bottom, sides and ends are preferably lined with a suitable non-corrosive metal to resist the corroding effect of the exhaust gases.

Perforations can be substituted for the slots in one or more of the partitions.

I am aware that other modifications may be resorted to in carrying out my invention within the spirit and scope thereof, andI do not, therefore, limit myself to the details lof construction shown, except where specified in the claims.

Having thus described my invention,what

`ting and discharging exhaust gases and for causing them to travel in a circuitous -path therein, and a heat distrlbutlng compartment in its upper portion whose walls are heater and muffler for autitions Within said shell or casing and suby dividing it into gas compartments and a heat distributing compartment, the partition intermediate the gas compartments having an opening which places Said compartments in communication, the partition which defines the heat distributing compartment being imperforate, and an inlet and offtake for the respective gas compartments.

3. In a combined heater and muffler for automobiles, a shell or casing having removable walls, a plurality of removable partitions within said shell or casing and subdividing it into gas compartments and a heat distributing` compartment, the partition intermediate the gas compartments having an opening which places said compartments in communication, the partition which defines the heat distributing compartment being imperforate, an outer Wall or plate for said heat distributing compartment, and a 'damper for controlling said outer Wall or plate.

4. In a combined heater and muffler for automobiles, a. shell or casing having separable Walls provided with channels, partitions slidably received in said channels and subdividing the shell lor casing into compartments, said partitions having openings whereby the compartments are placed in communication, an inlet for the first compartment and an outlet for the finalcomartment, another removable partition similarly slidably seated, said partition being imperforate and serving as a Wall of one of the compartments aforesaid, and a damper controlled outerWall or plate for the shell or casing which defines, in connection with the last-named partition, a heat distributing compartment.

f In testimony whereof, I hereunto aiix my signature in presence of tWo Witnesses.

JOSEPH L. ANDERSON. lVitnesses ROBERT J. MoGRncoR, W. H. CosY. 

